Home / 81,405.40-122,144.55-37,009.30

Finding the Fourth Proportional to 81,405.40, 122,144.55 and 37,009.30

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Solution

The fourth proportional to 81,405.40, 122,144.55 and 37,009.30 is: 55,530.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,405.40 : 122,144.55 = 37,009.30 : x
  2. Step 2: Convert to fraction form
    81,405.40/122,144.55 = 37,009.30/x
  3. Step 3: Cross multiply
    81,405.40x = 122,144.55 × 37,009.30
  4. Step 4: Simplify right side
    81,405.40x = 4,520,484,294.32
  5. Step 5: Solve for x
    x = 4,520,484,294.32/81,405.40
  6. Step 6: Final answer
    x = 55,530.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.